Work out inbreeding coefficient instantly with clear inputs, formula shown and shareable results.
Applies Wright's path coefficient method, summing one half to the power of the path length plus one over all paths through common ancestors.
Wright's formula
F = sum over paths of (0.5)^(n1 + n2 + 1) x (1 + FA), where n1 and n2 are the generations from each parent to the common ancestor
0.0625, or 6.25%, from two paths through a pair of shared grandparents.
Inbreeding raises homozygosity, which increases the expression of recessive disorders and typically depresses fitness traits.